TWI224702B - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
- Publication number
- TWI224702B TWI224702B TW089114658A TW89114658A TWI224702B TW I224702 B TWI224702 B TW I224702B TW 089114658 A TW089114658 A TW 089114658A TW 89114658 A TW89114658 A TW 89114658A TW I224702 B TWI224702 B TW I224702B
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- Prior art keywords
- light
- supply unit
- guide plate
- light guide
- light supply
- Prior art date
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0078—Side-by-side arrangements, e.g. for large area displays
- G02B6/008—Side-by-side arrangements, e.g. for large area displays of the partially overlapping type
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133604—Direct backlight with lamps
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/007—Incandescent lamp or gas discharge lamp
- G02B6/0071—Incandescent lamp or gas discharge lamp with elongated shape, e.g. tube
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133314—Back frames
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133322—Mechanical guidance or alignment of LCD panel support components
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133628—Illuminating devices with cooling means
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/36—Airflow channels, e.g. constructional arrangements facilitating the flow of air
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/54—Arrangements for reducing warping-twist
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
W4702
經濟部智慧財產局員工消費合作社印製 發明背景 發明領域 本發明有關一種液晶顯示器(LCD),尤其有關一種下 述的液晶顯示器,其中至少兩個或更多個光導板呈平行配 置、且一個燈單元配置於光導板一側上或光導板之間,因 此加強大螢幕尺寸LCD的照度,使得此LCD具有均勻照度 並達成小型尺寸及較輕的LCD。 相關技藝之描沭 LCD—般係為最常用的平板顯示器類型,尤其,lcd 由於小尺寸、輕重量及較低功率消耗而取代習知的陰極射 線管(CRT)。 為了在LCD板上顯示影像,LCD需要一個稱為背光總 成之光源。 $光總成包含:一個燈單元,用以產生光束、一個漫 射層,配置於LCD板下方以漫射從燈單元產生之光束、一 個光導板,具有楔形或平坦形以將燈單元產生的光束導入 光導板的全體表面、一個反射板,配置於光導板下方以將 光導板所洩漏光線導向LCD板、以及稱為模架之一個接收 容器,該接收容器係收納燈單元、漫射層、光導板及反射 板。 近來已發展出桌上型電腦及筆記型電腦用之14吋對角 尺寸或更大的LCD板,且幾乎已在所有產業中普遍作為顯 示器之用。 LCD技術的發展雖針對大尺寸螢幕,lcd板的厚度並 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公蓳) 4 J 一 --------^— 先閱讀,背面之注意事項再填寫本頁) 1224702 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明(2 ) 未大幅增加。但背光總成的尺寸與厚度係與螢幕尺寸增加 成正比大幅增加,這也是增大光導板尺寸之因素。 為了防止LCD技術對大尺寸螢幕演進造成之難以避免 的LCD尺寸與厚度增加,自然地增大光導板的入射面厚度 ,因此亦增加光導板之總面積及重量,導致LCD的整體尺 寸與厚度增加,而不符合LCD追求超薄及輕重量之趨勢。 發明概論 本發明可使LCD具有大螢幕尺寸、超薄厚度及輕重量 為了如實施方式及廣泛說明般地達成根據本發明目的 之以上及其他優點,液晶顯示器包含:一個光供應單元組 ,具有平行排列之至少兩個光導板及耦合至該光導板一側 之至少一個燈單元;一光控制元件安裝在該光供應單元組 之一上表面上,以均勻地控制光導板與該燈單元之間的照 度;一反射板配置於光供應單元組之一後表面上且具有與 該光供應單元組的後表面相對應的形狀;一個背光總成係 包括個接收容器,以收納該光供應單元組、該光控制元 件及該反射板;及一顯示單元,安裝在該光控制元件上並 由該接收容器所固定。 根據本發明另一型態,為了達成目的及優點,提供一 種液晶顯示器,包含:一個光供應單元組,具有平行排列 之至少兩個平坦的光導板及耦合至該平坦的光導板一側之 至v個燈單元,一光控制元件安裝在該光供應單元組之 一上表面上,以均勻地控制該平坦的光導板與該燈單元之 本紙張尺度適用中關家標準(CNS)A4規格⑵〇 χ 297公爱)
ι!Ίί ΜΨ * A (請先閱讀背面之注意事項再填寫本頁) —訂---------. 1224702 Α7 Β7 五、發明說明(3 ) 間的照度;一反射板配置於該光供應單元組之一後表面上 且具有與該光供應單元組的後表面相對應的形狀;一個背 光總成係包括一個接收容器,以收納該光供應單元組、該 光控制元件及該反射板;及一顯示單元,安裝在該光控制 元件上並由該接收容器所固定。 根據本發明另一型態,為了達成目的及優點,提供一 種液晶顯示器,包含:一個光供應單元組,具有一個平坦 型光導板、一個耦合至該平坦型光導板之楔型光導板及耦 合至该平坦型光導板或該楔型光導板的一側之至少一個燈 單元,其中该平坦型光導板及該楔型光導板呈平行排列; 光控制元件安裝在該光供應單元組之一上表面上,以均 勻地控制該光導板與該燈單元之間的照度;一反射板配置 於该光供應單元組之一後表面上且具有與該光供應單元組 的後表面相對應的形狀;一個背光總成係包括一個接收容 器,以收納該光供應單元組、該光控制元件及該反射板; 及顯不單元,安裝在該光控制元件上並由該接收容器所 固定。 圖式簡單說明 參圖式以詳細描述較佳實施例,以更暸解本發明上 述目的及其他優點,其中: 第1圖為根據本發明的一項較佳實施例之液晶顯示器 之分解立體圖; 第2圖為第1圖中容器之平面圖; 第3圖為根據本發明一較佳實施例之光供應單元的立 本紙張尺度適用τ關家標準(CNS)A4規格(21() χ挪公爱)------ -6 - -!.-----f (t先閱讀背面之注意事項再填寫本頁) 訂---- 經濟部智慧財產局員工消費合作社印製 五、發明說明(4) 體圖; 第5圖為圖示顯示單元固 合關係之分解立體圖; 疋蓋與液晶顯示板之間的耦 第6圖為第1圖的元件組裝之後沿線6_6,之剖視圖; 第7圖為根據本發明另一實施例之光供應單元組之示 第8圖及第9圖為根據本發明另一實施例之光供 組的示意圖。 較佳實施例的詳細描述 現詳細參照本發明較佳實施例,其範例顯示於圖中。 下文參照圖式更詳細描述根據本發明之一種液晶顯示 第1圖為根據本發明一較佳實施例之液晶顯示器的分 解立體圖。 參照第1圖,液晶顯示器801整體包含一顯示單元1〇〇 、一背光總成600及一底座700。 顯示單元100包含一液晶顯示(LCD)板1〇、一帶載體 構裝20、及具有一驅動訊號產生元件(未圖示)之一個印刷 電路板(PCB)30。 LCD板10包括一TFT基材2、一濾色基材4、及介於TFT 基材2與濾色基材4之間的一液晶層。 A7
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五、發明說明(6 經濟部智慧財產局員工消費合作社印製 -模架300(作為一接收容器)、光學層4〇〇及一顯示單元固 定蓋500。 參照第1至第3圖,光供應單元組2〇〇包括多數之光供 應單元15〇,光供應單元15〇各具有一光導板ιι〇及一燈單 元 130。 光導板110俯視時呈長方形且為楔型,其中從一邊緣 前往相對的另-邊緣減少厚度。域,與具有較厚光導板 之一邊緣相對應之一個側壁112係提供一入射面的作用。 作為光入射面且與側壁垂直之側壁的一個上緣係具有一個 階狀部114,光導板11〇亦具有朝向彼此之侧壁116及118, 各側壁116及118具有一個從表面突起選定高度之防搖突部 119,突部119較佳具有長方狀平行六面體形狀,突部ιΐ9 李馬合至接收容器300以防止光導板11〇不必要地搖擺。 在光導板110下方,係由絲網方法形成一反射層(或一 反射點),以增加照度。 燈單元130包括一個具有半圓柱形燈蓋132及一個安裝 在燈蓋132内之燈134。燈蓋134以多種膠接方式固定至側 壁112作為光入射面。 上述貝施例雖顯示及描述一個僅具單燈之光供應單元 ’光供應單元1 5 0可具有至少兩個燈。 第1圖顯示光供應單元組2〇〇,其中四個光供應單元彼 此耦合,如第1圖所示,光供應單元組2〇〇之各光供應單元 15 0的其他邊緣係安裝在相鄰光供應單元之光入射面112的 階狀部114上且相耦合。 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 〆 · --------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 1224702 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明(7 ) 與上述光供應單元組2〇〇之製法不同,亦可由射出成 型,製造光供應單元組2〇〇。當採用射出成型以形成光供 應單兀組200日才,目為後表面並不平坦故不適用絲網法在 光導板110後表面上形成反射層。所以,當施用射出成型 時,射出成型所用的模具之一底表面受腐钱而具有一粗糖 表面作為反射層。下文中,燈單元13〇麵合至製成的光供 應單元組200。 對於该總成,一反射板21〇收納在接收容器3〇〇中,然 後光供應單元組200在接收容器3〇〇内收納在反射板上。 如第1圖及第2圖所示,接收容器3〇〇為長方狀平行六 面體,其中一上表面開啟且具有一個用於收納光供應單元 組200之空間。 在光供應單元組200與接收容器3〇〇組裝之後,光供廡 單元組200之一個上表面應平置,因此,接收容器3〇〇的一 底表面220具有鋸齒結構,使其與光供應單元組2〇〇之後表 面適當地耦合。 上述實施例中,光供應單元組2〇〇由四個光供應單元 150所構成。為此,接收容器3〇〇的後表面具有鋸齒。 同時,如第1及第2圖所示,接收容器300在與光供應 單兀組200之防搖突部1丨9相對應之一個位置處具有一個突 部固定槽235,在光供應單元組2〇〇與接收容器3〇〇組裝之 期間’突部固定槽235與防搖突部119相耦合。 當上述構造的LCD操作時,光供應單元組2〇〇的燈單 元134大量熱量’為防止因發熱而降低燈134的效率,如第 '一 · --------^---------^9 (請先閱«.背面之注意事項再填寫本頁)
1224702 A7 ---— B7 ___ 五、發明說明(8 ) 2圖所示,接收容器300具有至少一個熱幅射孔24〇。 接收容器300亦包括一底部上之多數開口 25〇,各開口 具有長方板狀,接收容器300因具有開口 25〇而變輕。 在耦合至接收容器300之光供應單元組2〇〇上,安裝至 少一個、較佳三個漫射層400。 硬射層400應固定至接收容器3〇〇 ’故雖然在光供應單 元組300耦合至接收容器300的狀態中,接收容器3〇〇搖擺 、或硬射層400受熱而膨漲,漫射層4〇〇仍可承受搖擺或熱 膨漲。 因此,用以固定漫射層400之轂260係形成於接收容器 300的四角上,本文轂260需有大於漫射層4〇〇總厚度之高 度。 譬如,當具有三個漫射層400時,漫射層400歸類成如 弟4b圖之一第一漫射層410,及如第4a圖之一第二漫射層 420 ° 第一漫射層410係為與光供應單元組200上表面相接觸 之一層,第二漫射層420係為三漫射層400中之其餘兩層且 安裝在第一漫射層410的上表面上。 參照第4b圖,第一漫射層410包含一個形成於光供應 單元150與光供應單元150之間的邊界上之反射構件414, 以防止邊界上具有不均勾的照度,因此引發散射性反射。 以絲網法形成反射構件414。 第4a圖所示的第二漫射層420再度漫射由第一漫射層 410不規則反射之光束,因此增加照度之均勾性。 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) .1-----f (請先閱讀背面之注意事項再填寫本頁) 訂----- 經濟部智慧財產局員工消費合作社印製 11 1224702 A7 B7__ 五、發明說明(9 ) (請先閱讀背面之注意事項再填寫本頁) 第一及第二漫射層410及420各包含突部418及428,突 部41 8及428在四角具有一個耦合孔41 8a及428a,耦合孔 418a及428a***在接收容器300四角形成之轂260中,此處 ,耦合孔41 8a及428a具有顧及漫射層400因熱而膨漲之特 定結構。 詳述之,在影像正常顯示之狀態中,一個參考耦合孔 係配置於漫射層400的左上角且具有可***接收容器300的 轂260中之直徑。 並且,在影像正常顯示之狀態中,一個配置於左下角 之耦合孔具有橢圓形,其中水平直徑大於垂直直徑。橢圓 形的耦合孔使得:當漫射層400因熱而膨漲時,漫射層400 僅沿水平方向膨漲。 配置於漫射層的右上與下部上之其餘兩個耦合孔具有 可與相對應的轂直徑相比較之某些公差。 當上述構造的漫射層400係耦合至已與光供應單元組 200相耦合的接收容器300之轂260時,漫射層400幾乎不會 沿左與右向搖擺且可容易地從轂260取出。 經濟部智慧財產局員工消費合作社印製 因此,為了防止取出漫射層400及光供應單元組200並 固定顯示單元100,一個顯示單元固定蓋500覆蓋在接收容 器300上。 如第5圖所示,顯示單元固定蓋500係為一個長方形架 且耦合至接收容器300,此處,接收容器300具有侧壁外上 部上之一個階狀部290,使得單元固定蓋500剛性耦合至接 收容器300。 12 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) A7 TT'----51~_ 五、發明說明(10) ”、、頁不單7L固定蓋500具有一個推件52〇,推件52〇在一 内下部上推動該防搖突部119,使得麵合至接收容器遍之 (請先閱讀背面之注意事項再填寫本頁) 先供應2組200的光導板110並未對於外側偏離。 一 ”、、員不單兀固定蓋500具有一個導件53〇以在組裝顯示單 二〇〇朗於一適當位置處引導顯示單元1〇〇,Α包括顯示 =一 口疋蓋500之二個角的上緣處部份地形成導件530,提 七、不具有導件530之顯示單元固定蓋5〇〇的兩邊緣部而使 _°Β3〇弓曲。易言之,該等兩邊緣部可使PCB30易彎往顯 示單元固定蓋500的後面。 此處而使已彎曲的PCB3〇如第3圖應該彎向光導板 112a之較薄部份,這是為了 tpeB3Q彎曲而置於光供應單 疋組200的燈單元部份上時,防止帶載體構裝20的半導體 晶片焚到燈單元130熱量所劣化。 在顯不單元100耦合至顯示單元固定蓋500的狀態中, 為了防止顯示單元1〇〇偏離顯示單元固定蓋5〇〇、加強顯示 單元固疋蓋5〇〇與接收容器3〇〇之間的耦合力、並保護顯示 單兀不爻外部衝擊,如第6圖所示,一個底座7〇〇係耦合且 固疋至顯示單元固定板5〇〇及接收容器3〇〇。 經濟部智慧財產局員工消費合作社印製 第7圖顯示根據本發明另一實施例之光供應單元組200 ’此處’除了光供應單元組之外的其他元件可同樣適用於 本LCD,因此刻意省去描述。 參照第7圖,顯示兩個光供應單元組16〇及17〇,各個 光供應單元組具有與第丨圖至第5圖相同方式彼此耦合之兩 個光供應單元。兩個光供應單元組16〇及17〇彼此耦合,使 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 13 1224702
經濟部智慧財產局員工消費合作社印製 五、發明說明(11) 得一個光供應單元組之單元光供應單元的較薄部份係面對 另一個光供應單元組之單元光供應單元的較薄部份,此時 ,接收容器300的底部應具有能夠收納具有上述構造的光 供應單元組200之此種結構。 第8圖顯示根據本發明另一實施例之光供應單元組。 參照第8圖,光供應單元組94〇包含平行排列之至少兩 個平坦的光導板9 1 〇及配置於光導板9丨〇的一邊緣上或光導 板910與光導板910之間之一個燈單元92〇。 如同習知實施例,接收容器3〇〇的底部應具有能夠收 納光供應單元組940之此種結構。 第9圖顯示根據本發明另一實施例之光供應單元組98〇 〇 參照第9圖,光供應單元組98〇包含配置於中心部上之 一個平坦型光導板95〇、配置於平坦型光導板95〇兩側上之 楔型光導板960、及配置於平坦型光導板95〇與楔型光導板 960之間的一個燈單元97〇。 如同習知實施例,接收容器3〇〇的底部應具有能夠收 納光供應單元組980之此種結構。 如上述,本發明可提供一種藉由形成一個包含多數光 導板及其間配置的一燈單元之光供應單元組而具有高且均 勻照度之液晶顯示器。 並且,利用楔型光導板並連接多個楔型光導板,使光 導板的重量變輕且可獲得大尺寸螢幕。 並且’因為燈單元所生熱量係有效幅射至外部,可防 本紙張尺度適用中國國家標準(qsjs)A4規格(210 X 297公釐) —-----------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 14 1224702 A7 B7 五、發明說明(12) 止安裝在PCB上的半導體晶片及帶載體構裝產生劣化。 雖已詳述本發明,應瞭解可作多種變化、替代及更改 ,而不背離申請專利範圍界定之本發明的精神與範圍。 經濟部智慧財產局員工消費合作社印製 元件標號對照 110,112a,910…光導板 260…轂 112,116,118 …侧壁 300…模架 114···階狀部 400…漫射層 119,418,428···突部 410…第一漫射層 130,134,920,970",燈單元 414…反射構件 13 2…燈蓋 418a,428a··· |禺合孔 13 4 •"燈 420…第二漫射層 150···光供應單元 500…顯示單元固定蓋 160,170,200,940,980 …光 520…推件 供應單元組 5 3 0…導件 210···反射板 600…背光總成 235···突部固定槽 700…底座 240…熱幅射孔 950…平坦型光導板 250···開口 960…楔型光導板 ---------------------訂--------- (t·先閱It.背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 15
Claims (1)
1224702
經濟部智慧財產局員工消費合作社印制衣 i · 一種液晶顯示器,包含: 一個光供應單7L組,具有平行排列之至少兩個光 導板及耦合至該光導板一側之至少一個燈單元· 一光控制元件,安裝在該光供應單元組之一上表 面上,以均句地控制該光導板與該燈單元之間的照度 一反射板,配置於該光供應單元組之一後表面上 且具有與4光供應早元組的後表面相對應的形狀; 一個背光總成,包括一個接收容器以收納該光供 應單元組、该光控制元件及該反射板;及 一顯示單元,安裝在該光控制元件上並由該接收 容器所固定。 2 ·如申请專利範圍第1項之液晶顯示器,其中該光供應單 兀組包含多數之光供應單元,各該等光供應單元包含: 一光導板,具有楔型長方狀平行六面體形狀,其 厚度從一邊緣前往該邊緣所面對的另一邊緣減小,該 光導板具有一個形成於該一邊緣上緣上之階狀部及一 個形成於該光導板的一後表面上之圖案化反射層;及 光供應単元,具有一燈早元,該燈單元包括一 燈蓋及一燈,該燈單元耦合至該光導板的一邊緣, 其中一個該等光導板的一較薄端部係安裝在與該 燈單元相耦合之該階狀部上。 3 ·如申凊專利範圍第1項之液晶顯示器,其中該光供應單 元組包含一第一光供應單元組及一第二光供應單元組 I ^ ----------------tr---------^Aw. (請先閱讀背面之注意事項再填寫本頁)
-16 - 1224702 A8SC8D8 經濟部智慧財產局員工消費合作社印製 六、申請專利範圍 ,該第一光供應單元組及該第二光供應單元組各包含: 一光導板,具有楔型長方狀平行六面體形狀,其 從一邊緣前往該邊緣所面對的另一邊緣減小厚度,該 光‘板具有一個形成於該一邊緣上緣上之階狀部及一 個形成於該光導板的一後表面上之圖案化反射層;及 一光供應單元,具有一燈單元,該燈單元包括一 、且蓋及 44燈單元搞合至該光導板的一邊緣, 其中一個該等光導板的一較薄端部係安裝在與該 燈單元相_合之該階狀部上, 其中該第一光供應單元組係連接至該第二光供應 單元組,使得該第一光供應單元組的一較薄端部係朝 向該第二光供應單元組之一較薄端部。 •如申明專利範圍第3項之液晶顯示器,其中該光導板包 含一個形成於與該燈單元相垂直之該光導板的一側壁 上之防搖突部。 5.如申请專利範圍第丨項之液晶顯示器,其中該接收容器 具有長方狀平行六面體形狀,其上表面開啟且底表面 具有與該光供應單元組後表面相配合的形狀,該形狀 具有一個收納該光供應單元組2〇〇之空間, 其中該接收容器包含: 一突部輕合槽’形成於與該防搖突部相對應之一 部份上且1¾合至該防搖突部; 一熱幅射孔,形成於與該燈單元相對應之一部份 上,用以幅射自該燈單元所生熱量; 17 7 --------tr---------線 (請先閱讀背面之注意事項再填寫本頁)
17 1224702 A8 B8 C8 D8 六、申請專利範圍 一開口,形成於除了該熱幅射孔以外的一其餘部 份上,以減小該接收容器的重量,及 一固定突部,形成於該接收容器的一角上並突出 一預定高度,用以固定該光控制元件的漫射。 6.如申請專利範圍第丨項之液晶顯示器,其中該光控制 件包含: 經濟部智慧財產局員工消費合作社印製 一第一層,具有一個形成於一個與兩個相鄰單元 光供應單元之間的接觸部相對應的部份上之反射層, 且用於加強照度均勻度;及 一第二層,安裝於該第一層上且具有至少一層 漫射通過該第一層之光線。 7·如申請專利範圍第1項之液晶顯示器,其中該光供應 元組及該光控制元件係固定至與該接收容器相耦合 一個固定蓋的一後面,且該顯示單元係固定至該固 蓋之一前面。 8_ —種液晶顯示器,包含: 一個光供應單元組,具有平行排列之至少兩個 坦的光導板及耦合至該平坦的光導板一側之至少一 燈單元; 一光控制元件,安裝在該光供應單元組之一上表 面上,以均勻地控制該平坦的光導板與該燈單元之間 的照度; 一反射板,配置於該光供應單元組之一後表面 且具有與该光供應單元組的後表面相對應的形狀; 以 πσ 早 之 定 平 個 上 ! — !彭--------tl---------線參 龜 、 (請先閱讀背面之注咅?事項再填寫本頁:ί 18 1224702 經 濟 部 智 慧 財 產 局 員 工 消 費 合 作 社 印 製 A8 B8 C8 D8 六、申請專利範圍 一個背光總成,包括一個接收容器以收納該光供 應單元組、該光控制元件及該反射板;及 一頒示單元,安裝在該光控制元件上並由該接收 容器所固定。 9 · 一種液晶顯示器,包含·· 一光供應單元組,具有一平坦型光導板、耦合至 該平坦型光導板之一個楔型光導板、及耦合至該平坦 型光導板或該楔型光導板的一側之至少一個燈單元, 其中該平坦型光導板及該楔型光導板呈平行配置; 一光控制元件,安裝在該光供應單元組的一上表 面上,用以均勻地控制該光導板與該燈單元之間的照 度; ' 一反射板,配置於該光供應單元組的一後表面上 且具有與該光供應單元組的後表面相對應之形狀; 月光4成,包括一接收容器以收納該光供應單 兀組、該光控制元件、及該反射板;及 ,、、、員示單元,女裝在该光控制元件上且由該接收 容器所固定。 H).如申請專利範圍第9項之液晶顯示器,其中該模型光導 板的-厚侧係朝向該平坦型光導板的一側,且該燈單 元配置於該平坦型光導板的一側與該楔型光導板的厚 側之間。 η·如申請專利範圍第9項之液晶顯示器,其中該平坦型光 導板係為至少兩個平行配置的導板。 本紙張尺度適用中國國家標準(CNSM4規格⑵〇 χ 297公金__ ----------------訂---------線 ^_w. (請先閱讀背面之注意事項再填寫本頁) 19
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- 1999-08-03 KR KR1019990031828A patent/KR100654220B1/ko not_active IP Right Cessation
-
2000
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- 2000-08-03 JP JP2000235288A patent/JP5079182B2/ja not_active Expired - Fee Related
- 2000-08-03 US US09/631,766 patent/US6580477B1/en not_active Expired - Lifetime
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TWI408462B (zh) * | 2010-06-22 | 2013-09-11 | Global Lighting Technolog Inc | 背光模組以及液晶顯示裝置 |
TWI413835B (zh) * | 2010-10-04 | 2013-11-01 | Hannstar Display Corp | 背光模組及顯示裝置 |
Also Published As
Publication number | Publication date |
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JP2001075096A (ja) | 2001-03-23 |
US6927812B2 (en) | 2005-08-09 |
JP5079182B2 (ja) | 2012-11-21 |
KR20010016747A (ko) | 2001-03-05 |
US20030206253A1 (en) | 2003-11-06 |
KR100654220B1 (ko) | 2006-12-05 |
US6580477B1 (en) | 2003-06-17 |
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